ECPR'08 Course 10:
  Network Analysis

ECPR Ljubljana

Teachers

Students

ECPR Claroline

Pajek: program, datasets

Special datasets:
Krebs' Internet Industries (paj),
Snyder and Kick World Trade (paj),
Bouchard's genealogy (GED),
Football 2002 (by Lothar Krempel) (net),
Signed networks (ZIP)

Lectures

• ECPR Course 10: Network Analysis ( PPT/ PPTX/ PDF )
• Introduction
• Description
• Sources
• Subnetworks
• Connectivity
• Importance, acyclic, pattern search
• Cohesion
• Two mode networks
• Clustering and blockmodeling
• What else?

Additional readings

• Granovetter, Mark 1973 "The Strength of Weak Ties." American Journal of Sociology 78: 1360-80.
• Freeman Linton C. 1979. "Centrality in Social Networks: A Conceptual Clarification." Social Networks 1: 211-213.
• Analysis of bibliographic networks
• Centrality in social networks

Labs

• How to? (PDF)
• Example networks: data (ZIP)
• Pajek datasets
• SVGanim - animation of temporal networks in SVG

Assignments

• Assignment 1:
  a. Among the networks (description) from the following list:
  1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26
  download the network with your number (in the list of students), read it in Pajek and draw it 'nicely'.
  b. Transform the Moreno's sociogram with your number from the following list:
  1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 18, 19, 20, 21, 22, 23, 24, 25, 26
  into Pajek's network data format. Using Pajek draw it to resemble the Moreno's picture.
  Info about Moreno's sociograms: keys, 1, 2, S1, S2.
  Both pictures and the Pajek's net file for your sociogram send to your TA till Wednesday, August 6 before the lectures.
• Assignment 2:
  a. read slides "Sources of networks"
  b. for 'your' network determine and draw the female/male subnetwork; determine the vertices with largest in/out/all-degree; determine initial/terminal/isolated vertices.
  c. in the S&K network: select a continent (not North America or Oceania), extract the subnetwork of countries belonging to it, draw it; draw it in the context of other continents. Select two continents. Extract and draw the subnetwork of lines between these two continents.
  Send the results to your TA till Thursday, August 7 before the lectures.
• Assignment 3:
  a. apply the connectivity concepts to 'your' network. For example: determine strong/weak components, ...
  b. apply the connectivity concepts to relations from the WordNet network (doc).
  Send the results to your TA till Friday, August 8 before the lectures.
• Assignment 4:
  a. apply the centrality concepts to 'your' network.
  b. apply the connectivity and centrality concepts to networks US airports and FOLDOC.
  Send the results to your TA till Monday, August 11 before the lectures.
• Assignment 5:
  a. apply the cohesion concepts to 'your' network.
  b. determine interesting subnetworks (cores, islands) in the Edinburgh Associative Thesaurus.
  Send the results to your TA till Tuesday, August 12 before the lectures.
• Assignment 6:
  a. analyze the two mode network They rule.
  Send the results to your TA till Wednesday, August 13 before the lectures.
• Assignment 7:
  a. analyze 'your' network using clustering and blockmodeling.
  b. analyze S&K network using clustering and blockmodeling.
  Send the results to your TA till Thursday, August 14 before the lectures.
• Assignment 8:
  a. On the WoS2Pajek page select a data set (SocNet, SN5, Rnd, TopInd, ...) and analyze the files in it.
  Alternatively, you can use your own data set: from the Web of Science (or ISI from IZUM) save the descriptions of papers (more than 500) on selected topic and using the program WoS2Pajek convert them into Pajek's files. For details see the WoS2Pajek manual.
  Send the results to your TA till Friday, August 15 before the lectures.